DAVIS Vantage Vue ISS Manuel d'utilisateur télécharger pdf (Page 5)

Sunrise and Sunset

Resolution ......................................................................... 1 minute

Accuracy ........................................................................... ±1 minute

Reference ......................................................................... United States Naval Observatory

Temperature

Inside Temperature (sensor located in console)

Resolution and Units.................................................. Current Data: 0.1°F or 1°F or 0.1°C or 1°C (user-selectable)

Historical Data and Alarms: 1°F or 1°C (user-selectable)

Range........................................................................ +32° to +140°F (0° to +60°C)

Sensor Accuracy........................................................ ±1°F (±0.5°C)

Update Interval .......................................................... 1 minute

Current Data .............................................................. Instant Reading (user adjustable); Daily, Monthly, Yearly High and

Low

Historical Data ........................................................... Hourly Readings; Daily and Monthly Highs and Lows; Highs and Lows

for Last 25 Days; Temp change per hour, Temp change for last 24

hours.

Alarms ....................................................................... High and Low Thresholds from Instant Reading

Outside Temperature (sensor located in ISS)

Resolution and Units.................................................. Current Data: 0.1°F or 1°F or 0.1°C or 1°C (user-selectable) nominal

(see Fig. 1) Historical Data and Alarms: 1°F or 1°C (user-selectable)

Range........................................................................ -40° to +150°F (-40° to +65°C)

Sensor Accuracy........................................................ ±1°F (±0.5°C) above +20°F (-7°C); ±2°F (±1°C) under +20°F (-7°C)

(see Fig. 2)

Radiation Induced Error (Passive Shield)................... +4°F (2°C) at solar noon (insolation = 1040 W/m

, avg. wind speed 

2 mph (1 m/s)) (reference: RM Young Model 43408 Fan-Aspirated

Radiation Shield)

Update Interval .......................................................... 10 to 12 seconds

Current Data .............................................................. Instant Reading (user adjustable); Daily, Monthly, Yearly High and

Low

Historical Data ........................................................... Hourly Readings; Daily, Monthly, Yearly Highs and Lows

Alarms ....................................................................... High and Low Thresholds from Instant Reading

Ultra Violet (UV) Radiation Index (requires Vantage Pro2 ISS with UV sensor)

Resolution and Units ......................................................... 0.1 Index

Range ............................................................................... 0 to 16 Index

Accuracy ........................................................................... ±5% of full scale (Reference: Yankee UVB-1 at UV index of 10

(Extremely High))

Cosine Response .............................................................. ±4% (0° to 65° incident angle); 9% (65° to 85° incident angle)

Update Interval.................................................................. 50 seconds to 1 minute (5 minutes when dark)

Current Data ..................................................................... Instant Reading

Wind

Wind Chill (Calculated)

Resolution and Units.................................................. 1°F or 1°C (user-selectable)

Range........................................................................ -110° to +135°F (-79° to +57°C)

Accuracy.................................................................... ±2°F (±1°C) (typical)

Update Interval .......................................................... 10 to 12 seconds

Source ....................................................................... United States National Weather Service (NWS)/NOAA

Equation Used ........................................................... Osczevski (1995) (adopted by US NWS in 2001)

Variables Used .......................................................... Instant Outside Temperature and 10-min. Avg. Wind Speed

Current Data .............................................................. Instant Calculation; Hourly, Daily, Monthly, Yearly Low

Historical Data ........................................................... Hourly, Daily and Monthly Lows

Alarm......................................................................... Low Threshold from Instant Calculation

Wind Direction

Display Resolution ..................................................... 16 points (22.5°) on compass rose, 1° in numeric display

Range........................................................................ 0-360°

Accuracy.................................................................... ±3°

Update Interval .......................................................... 2.5 to 3 seconds

Current Data .............................................................. Instant Reading (user adjustable); 10-min. Dominant; Hourly, Daily,

Monthly Dominant

Historical Data ........................................................... Past 6 10-min. Dominants on compass rose only; Hourly, Daily,

1 2 3 4 5 6 7

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DAVIS Vantage Vue ISS Manuel d'utilisateur Page 5

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